chore: update eslint to v9, related deps, config

eslint.config.js

@@ -0,0 +1,23 @@
+import js from '@eslint/js';
+import eslintPluginSvelte from 'eslint-plugin-svelte';
+import * as svelteParser from 'svelte-eslint-parser';
+import * as typescriptParser from '@typescript-eslint/parser';
+
+export default [
+	js.configs.recommended,
+	...eslintPluginSvelte.configs.recommended,
+	{
+		files: ['**/*.svelte'],
+		languageOptions: {
+			parser: svelteParser,
+			parserOptions: {
+				parser: typescriptParser,
+				project: './tsconfig.json',
+				extraFileExtensions: ['.svelte']
+			}
+		}
+	},
+	{
+		ignores: ['.netlify', '.svelte-kit', 'static', 'build']
+	}
+];

package.json

@@ -12,6 +12,8 @@
 		"format": "prettier --plugin=prettier-plugin-svelte --plugin=prettier-plugin-tailwindcss --write ."
 	},
 	"devDependencies": {
+		"@eslint/eslintrc": "^3.2.0",
+		"@eslint/js": "^9.18.0",
 		"@resvg/resvg-js": "^2.6.2",
 		"@sveltejs/adapter-netlify": "^4.4.0",
 		"@sveltejs/kit": "^2.15.2",
@@ -27,21 +29,22 @@
 		"@typescript-eslint/eslint-plugin": "^7.9.0",
 		"@typescript-eslint/parser": "^7.9.0",
 		"autoprefixer": "^10.4.20",
-		"eslint": "8.57.0",
-		"eslint-config-prettier": "^9.1.0",
-		"eslint-plugin-svelte": "^2.39.0",
+		"eslint": "^9.18.0",
+		"eslint-config-prettier": "^10.0.1",
+		"eslint-plugin-svelte": "3.0.0-next.14",
 		"postcss": "^8.5.1",
 		"prettier": "^3.4.2",
 		"prettier-plugin-svelte": "^3.3.3",
 		"prettier-plugin-tailwindcss": "^0.6.9",
 		"satori": "^0.10.13",
 		"satori-html": "^0.3.2",
-		"svelte": "^4.2.17",
+		"svelte": "^5.18.0",
 		"svelte-check": "^3.7.1",
 		"svelte-preprocess": "^5.1.4",
 		"tailwindcss": "^3.4.17",
 		"tslib": "^2.8.1",
-		"typescript": "5.7.3",
+		"typescript": "^5.7.3",
+		"typescript-eslint": "^8.20.0",
 		"vite": "^5.2.11"
 	},
 	"type": "module",